<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    &lt;script&gt;
        var event = event || window.event;    <br>
        alert("坐标：【" + event.clientX + "," + event.clientY + "】");<br>
    &lt;/script&gt;
</body>
<script>
    window.onload=function(){
         var event=event || window.event;
         document.onclick=function(event){
              alert("坐标 【"+event.clientX +','+event.clientY +'】'  )
         }
    }
</script>
</html>